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14 **************************************************************************/
18 //_________________________________________________________________________
19 //*-- Implementation version v2 of EMCAL Manager class; SHASHLYK version
20 //*-- An object of this class does not produce digits
21 //*-- It is the one to use if you do want to produce outputs in TREEH
23 //*-- Author : Alexei Pavlinov (WSU)
24 // : Adapted for DCAL by M.L. Wang CCNU Wuhan & Subatech Oct-23-2012
25 // This Class not stores information on all particles prior to EMCAL entry - in order to facilitate analysis.
26 // This is done by setting fIShunt =2, and flagging all parents of particles entering the EMCAL.
29 // --- ROOT system ---
31 #include <TClonesArray.h>
33 #include <TParticle.h>
35 #include <TVirtualMC.h>
37 // --- Standard library ---
39 // --- AliRoot header files ---
40 #include "AliEMCALv2.h"
41 #include "AliEMCALHit.h"
42 #include "AliEMCALGeometry.h"
44 #include "AliHeader.h"
47 #include "AliTrackReference.h"
48 // for TRD1 case only; May 31,2006
52 //______________________________________________________________________
53 AliEMCALv2::AliEMCALv2()
59 //______________________________________________________________________
60 AliEMCALv2::AliEMCALv2(const char *name, const char *title,
61 const Bool_t checkGeoAndRun)
62 : AliEMCALv1(name,title,checkGeoAndRun)
66 //fHits= new TClonesArray("AliEMCALHit",1000); //Already done in ctor of v1
67 gAlice->GetMCApp()->AddHitList(fHits);
70 fIshunt = 2; // All hits are associated with particles entering the calorimeter
73 fGeometry = GetGeometry();
76 //______________________________________________________________________
77 AliEMCALv2::~AliEMCALv2(){
80 //Already done in dtor of v1
88 //______________________________________________________________________
89 void AliEMCALv2::AddHit(Int_t shunt, Int_t primary, Int_t tracknumber, Int_t iparent, Float_t ienergy,
90 Int_t id, Float_t * hits,Float_t * p){
91 // Add a hit to the hit list.
92 // An EMCAL hit is the sum of all hits in a tower section
93 // originating from the same entering particle
94 static Int_t hitCounter;
95 static AliEMCALHit *newHit, *curHit;
100 newHit = new AliEMCALHit(shunt, primary, tracknumber, iparent, ienergy, id, hits, p);
101 for ( hitCounter = fNhits-1; hitCounter >= 0 && !deja; hitCounter-- ) {
102 curHit = (AliEMCALHit*) (*fHits)[hitCounter];
103 // We add hits with the same tracknumber, while GEANT treats
104 // primaries succesively
105 if(curHit->GetPrimary() != primary)
107 if( *curHit == *newHit ) {
108 *curHit = *curHit + *newHit;
110 // break; // 30-aug-04 by PAI
112 } // end for hitCounter
115 new((*fHits)[fNhits]) AliEMCALHit(*newHit);
118 // printf(" fNhits %i \n", fNhits);
122 //______________________________________________________________________
123 void AliEMCALv2::StepManager(void){
124 // Accumulates hits as long as the track stays in a tower
126 // position wrt MRS and energy deposited
127 static Float_t xyzte[5]={0.,0.,0.,0.,0.};// position wrt MRS, time and energy deposited
128 static Float_t pmom[4]={0.,0.,0.,0.};
129 static TLorentzVector pos; // Lorentz vector of the track current position.
130 static TLorentzVector mom; // Lorentz vector of the track current momentum.
131 static Float_t ienergy = 0; // part->Energy();
132 static TString curVolName="";
133 static int supModuleNumber=-1, moduleNumber=-1, yNumber=-1, xNumber=-1, absid=-1;
134 static int keyGeom=1; //real TRD1 geometry
135 static const char *vn = "SCMX"; // Apr 13, 2006 - only TRD1 case now
136 static Float_t depositedEnergy=0.0;
140 if(TVirtualMC::GetMC()->VolId("PBMO")==0 || TVirtualMC::GetMC()->VolId("WSUC")==1) {
141 vn = "SCMX"; // old TRD2(TRD1) or WSUC
144 printf("AliEMCALv2::StepManager(): keyGeom %i : Sensetive volume %s \n",
146 if(TVirtualMC::GetMC()->VolId("WSUC")==1) printf(" WSUC - cosmic ray stand geometry \n");
148 Int_t tracknumber = gAlice->GetMCApp()->GetCurrentTrackNumber();
152 curVolName = TVirtualMC::GetMC()->CurrentVolName();
153 if(curVolName.Contains(vn) || curVolName.Contains("SCX")) { // We are in a scintillator layer; SCX for 3X3
155 if( ((depositedEnergy = TVirtualMC::GetMC()->Edep()) > 0.) && (TVirtualMC::GetMC()->TrackTime() < fTimeCut)){// Track is inside a scintillator and deposits some energy
156 // Info("StepManager "," entry %i DE %f",++ientry, depositedEnergy); // for testing
158 fCurPrimary=gAlice->GetMCApp()->GetPrimary(tracknumber);
160 if (fCurParent==-1 || tracknumber != fCurTrack) {
164 if (fCurParent != -1) {
165 while (parent != fCurParent && parent != -1) {
166 //TParticle *part=gAlice->GetMCApp()->Particle(parent);
167 part=gAlice->GetMCApp()->Particle(parent);
168 parent=part->GetFirstMother();
171 if (fCurParent==-1 || parent==-1) {
172 //Int_t parent=tracknumber;
173 //TParticle *part=gAlice->GetMCApp()->Particle(parent);
175 part=gAlice->GetMCApp()->Particle(parent);
176 while (parent != -1 && fGeometry->IsInEMCALOrDCAL(part->Vx(),part->Vy(),part->Vz())) {
177 parent=part->GetFirstMother();
179 part=gAlice->GetMCApp()->Particle(parent);
183 Error("StepManager","Cannot find parent");
185 //TParticle *part=gAlice->GetMCApp()->Particle(fCurParent);
186 part=gAlice->GetMCApp()->Particle(fCurParent);
187 ienergy = part->Energy();
189 //Add reference to parent in TR tree.
190 AddTrackReference(tracknumber, AliTrackReference::kEMCAL);
193 while (parent != -1) {
194 part=gAlice->GetMCApp()->Particle(parent);
195 part->SetBit(kKeepBit);
196 parent=part->GetFirstMother();
199 fCurTrack=tracknumber;
201 TVirtualMC::GetMC()->TrackPosition(pos);
205 xyzte[3] = TVirtualMC::GetMC()->TrackTime() ;
207 TVirtualMC::GetMC()->TrackMomentum(mom);
213 // if(ientry%200 > 0) return; // testing
214 supModuleNumber = moduleNumber = yNumber = xNumber = absid = 0;
215 if(keyGeom >= 1) { // TRD1 case now
216 TVirtualMC::GetMC()->CurrentVolOffID(4, supModuleNumber);
217 TVirtualMC::GetMC()->CurrentVolOffID(3, moduleNumber);
218 TVirtualMC::GetMC()->CurrentVolOffID(1, yNumber);
219 TVirtualMC::GetMC()->CurrentVolOffID(0, xNumber); // really x number now
220 Int_t CurrentSMType = 0;
221 if(strcmp(TVirtualMC::GetMC()->CurrentVolOffName(4),"SMOD")==0) CurrentSMType = AliEMCALGeometry::kEMCAL_Standard ;
222 else if(strcmp(TVirtualMC::GetMC()->CurrentVolOffName(4),"SM10")==0) CurrentSMType = AliEMCALGeometry::kEMCAL_Half ;
223 else if(strcmp(TVirtualMC::GetMC()->CurrentVolOffName(4),"SM3rd")==0) CurrentSMType = AliEMCALGeometry::kEMCAL_3rd ;
224 else if(strcmp(TVirtualMC::GetMC()->CurrentVolOffName(4),"DCSM")==0) CurrentSMType = AliEMCALGeometry::kDCAL_Standard ;
225 else if(strcmp(TVirtualMC::GetMC()->CurrentVolOffName(4),"DCEXT")==0) CurrentSMType = AliEMCALGeometry::kDCAL_Ext ;
226 else AliError("Unkown SM Type!!");
229 while( fGeometry->GetSMType(preSM) != CurrentSMType ) preSM++;
230 supModuleNumber += preSM;
232 if(strcmp(TVirtualMC::GetMC()->CurrentVolOffName(0),vn) != 0) { // 3X3 case
233 if (strcmp(TVirtualMC::GetMC()->CurrentVolOffName(0),"SCX1")==0) xNumber=1;
234 else if(strcmp(TVirtualMC::GetMC()->CurrentVolOffName(0),"SCX2")==0) xNumber=2;
235 else if(strcmp(TVirtualMC::GetMC()->CurrentVolOffName(0),"SCX3")==0) xNumber=3;
236 else Fatal("StepManager()", "Wrong name of sensitive volume in 3X3 case : %s ", TVirtualMC::GetMC()->CurrentVolOffName(0));
239 TVirtualMC::GetMC()->CurrentVolOffID(5, supModuleNumber);
240 TVirtualMC::GetMC()->CurrentVolOffID(4, moduleNumber);
241 TVirtualMC::GetMC()->CurrentVolOffID(1, yNumber);
242 TVirtualMC::GetMC()->CurrentVolOffID(0, xNumber);
243 if (strcmp(TVirtualMC::GetMC()->CurrentVolOffName(5),"SMOP")==0) supModuleNumber = 2*(supModuleNumber-1)+1;
244 else if(strcmp(TVirtualMC::GetMC()->CurrentVolOffName(5),"SMON")==0) supModuleNumber = 2*(supModuleNumber-1)+2;
245 else assert(0); // something wrong
248 // Due to problem with index ordering conventions the calcultation of absid is no more like this:
249 //absid = fGeometry->GetAbsCellId(smNumber, moduleNumber-1, yNumber-1, xNumber-1);
251 //Swap A side in Phi and C side in Eta due to wrong indexing.
254 Int_t smNumber = supModuleNumber-1;
256 fGeometry->GetCellPhiEtaIndexInSModule(smNumber,moduleNumber-1,yNumber-1,xNumber-1, iphi, ieta);
257 if (smNumber%2 == 0) {
258 if(strcmp(TVirtualMC::GetMC()->CurrentVolOffName(4),"DCSM")==0) smType = 3; //DCal supermodule. previous design/idea
260 ieta = ((fGeometry->GetCentersOfCellsEtaDir()).GetSize()* 2/smType -1)-ieta;// 47/31-ieta, revert the ordering on A side in order to keep convention.
262 if(strcmp(TVirtualMC::GetMC()->CurrentVolOffName(4),"SM10")==0) smType = 2 ; //half supermodule. previous design/idea
263 if(strcmp(TVirtualMC::GetMC()->CurrentVolOffName(4),"SM3rd")==0) smType = 3 ; //one third (installed in 2012) supermodule
264 if(strcmp(TVirtualMC::GetMC()->CurrentVolOffName(4),"DCEXT")==0) smType = 3 ; //one third (installed in 2012) supermodule
265 iphi= ((fGeometry->GetCentersOfCellsPhiDir()).GetSize()/smType-1)-iphi;// 23/7-iphi, revert the ordering on C side in order to keep convention.
268 //Once we know the indexes, calculate the absolute ID
269 absid = fGeometry->GetAbsCellIdFromCellIndexes(smNumber, iphi, ieta);
272 printf(" supModuleNumber %i : moduleNumber %i : yNumber %i : xNumber %i \n",
273 supModuleNumber, moduleNumber, yNumber, xNumber);
274 Fatal("StepManager()", "Wrong id : %i ", absid) ;
277 Float_t lightYield = depositedEnergy ;
278 // Apply Birk's law (copied from G3BIRK)
280 if (TVirtualMC::GetMC()->TrackCharge()!=0) { // Check
281 Float_t birkC1Mod = 0;
282 if (fBirkC0==1){ // Apply correction for higher charge states
283 if (TMath::Abs(TVirtualMC::GetMC()->TrackCharge())>=2) birkC1Mod = fBirkC1*7.2/12.6;
284 else birkC1Mod = fBirkC1;
288 if (TVirtualMC::GetMC()->TrackStep()>0) dedxcm=1000.*TVirtualMC::GetMC()->Edep()/TVirtualMC::GetMC()->TrackStep();
290 lightYield=lightYield/(1.+birkC1Mod*dedxcm+fBirkC2*dedxcm*dedxcm);
293 // use sampling fraction to get original energy --HG
294 // xyzte[4] = lightYield * fGeometry->GetSampling();
295 xyzte[4] = lightYield; // 15-dec-04
298 printf("#sm %2i #m %3i #x %1i #z %1i -> absid %i : xyzte[4] = %f\n",
299 supModuleNumber,moduleNumber,yNumber,xNumber,absid, xyzte[4]);
301 AddHit(fIshunt, fCurPrimary,tracknumber, fCurParent, ienergy, absid, xyzte, pmom);
302 } // there is deposited energy